@bg: rgb(162, 135, 157);

.content {
  height: 800px;
  background: @bg;
  .react {
    width: 200px;
    height: 200px;
    float: left;
    margin-right: 20x;
    background: url('../img/react.png');
    background-size: cover;
  }
  .vue {
    width: 200px;
    height: 200px;
    float: left;
    margin-right: 20x;
    background: url('../img/vue.png');
    background-size: cover;
  }
}